package net.oschina.gitapp.widget;

import net.oschina.gitapp.R;
import android.content.Context;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.widget.EditText;

/**
 * @author sunday 2013-12-04
 */
public class EditTextWithDel extends EditText {
    private Drawable img;
    private Context mContext;
    
    public EditTextWithDel(Context context) {
        super(context);
        mContext = context;
        init();
    }
    
    public EditTextWithDel(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        mContext = context;
        init();
    }
    
    public EditTextWithDel(Context context, AttributeSet attrs) {
        super(context, attrs);
        mContext = context;
        init();
    }
    
    private void init() {
        img = mContext.getResources().getDrawable(R.drawable.edittext_delete);
        addTextChangedListener(new TextWatcher() {
            @Override
            public void onTextChanged(CharSequence s, int start, int before,
                    int count) {
            }
            
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count,
                    int after) {
            }
            
            @Override
            public void afterTextChanged(Editable s) {
                setDrawable();
            }
        });
        setDrawable();
    }
    
    // 设置删除图片
    private void setDrawable() {
        if (length() >= 1 && this.isFocused()) {
            setCompoundDrawablesWithIntrinsicBounds(null, null, img, null);
        }
        else {
            setCompoundDrawablesWithIntrinsicBounds(null, null, null, null);
        }
    }
    
    /**
     * 焦点改变时的处理
     */
    @Override
    protected void onFocusChanged(boolean focused, int direction,
            Rect previouslyFocusedRect) {
        setDrawable();
        super.onFocusChanged(focused, direction, previouslyFocusedRect);
    }
    
    // 处理删除事件
    @Override
    public boolean onTouchEvent(MotionEvent event) {
        if (img != null && event.getAction() == MotionEvent.ACTION_UP) {
            int eventX = (int) event.getRawX();
            int eventY = (int) event.getRawY();
            Rect rect = new Rect();
            getGlobalVisibleRect(rect);
            rect.left = rect.right - 50;
            if (rect.contains(eventX, eventY))
                setText("");
        }
        return super.onTouchEvent(event);
    }
    
    @Override
    protected void finalize() throws Throwable {
        super.finalize();
    }
}
